J. Phys. III France
Volume 7, Numéro 3, March 1997
Page(s) 505 - 515
DOI: 10.1051/jp3:1997138
J. Phys. III France 7 (1997) 505-515

HREM and WAXS Study of the Structure of Metallic Nanoparticles

M.-J. Casanove, P. Lecante, E. Snoeck, A. Mosset and C. Roucau

CEMES-LOE, CNRS, 29 rue J. Marvig, BP 4347, 31055 Toulouse Cedex, France

(Received 6 May 1996, revised 2 October 1996, accepted 13 November 1996)

Different samples of fine metal colloids synthesized following an organometallic route were investigated by High Resolution Transmission Electron Microscopy (HREM) and Wide Angle X-rays Scattering (WAXS). Simulations based on models for crystalline and multiply twinned particles were used to interpret the observations. Deviations from the bulk structure were clearly observed in the smaller particles and attributed to an effect of dimensions. Combined HREM and WAXS experiments proved to be very efficient in the study of ultrafine particles. In particular, 55-atoms fcc Pt particles were identified.

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